Tag Archives: NRR

NRR stands for “Not Really Realistic”

Posted on March 8, 2011 by

In the United States, hearing protection devices such as earplugs and earmuffs require a Noise Reduction Rating (NRR) to be listed directly on product packaging. The NRR is a dB value reflecting the level of attenuation a hearing protection product provides as evaluated under laboratory … Continue reading →

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